Separate the DOM and layout into separate crates.

src/components/script/dom/eventtarget.rs

@@ -0,0 +1,17 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use dom::bindings::utils::WrapperCache;
+
+pub struct EventTarget {
+    wrapper: WrapperCache
+}
+
+pub impl EventTarget {
+    fn new() -> ~EventTarget {
+        ~EventTarget {
+            wrapper: WrapperCache::new()
+        }
+    }
+}